Getting an error when cloning project environment.

[StephanieWurtz]

When I try to clone my project environment in Python I get the following error:

ERROR conda.core.link:_execute_actions(337): An error occurred while installing package 'defaults::ipykernel-4.9.0-py36_0'.
LinkError: post-link script failed for package defaults::ipykernel-4.9.0-py36_0
running your command again with `-v` will provide additional information
location of failed script: C:\Users\Sdwurtz\AppData\Local\ESRI\conda\envs\arcgispro-py3-clone2\Scripts\.ipykernel-post-link.bat
==> script messages <==
<None>

Attempting to roll back.

LinkError: post-link script failed for package defaults::ipykernel-4.9.0-py36_0
running your command again with `-v` will provide additional information
location of failed script: C:\Users\Sdwurtz\AppData\Local\ESRI\conda\envs\arcgispro-py3-clone2\Scripts\.ipykernel-post-link.bat
==> script messages <==
<None>

How can I get this fixed so I can clone my environment and add the Utility Solutions Toolbox to ArcGIS Pro?

Thanks for your help!

[JeffSkahill]

Were you able to resolve this issue? I just upgraded to 2.3.2 and get this error. I was previously able to clone with 2.2.4.

[JeffSkahill]

Not sure if this was the actual solution, but I tried cloning the environment again and renamed the output folder something different than the default name Esri provides and it worked.

[StephanieWurtz]

I did but I cheated. I made a copy of the environment and called it the clone and then imported it in.

Stephanie Wurtz

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[pfoppe]

Helpful information here.  We have also been experiencing these challenges in ArcGIS PRO v2.4.1 (and possibly a few versions before this).  More specifically, this is the workaround we have been using: 

1) In Windows Explorer - Copy the built-in ArcGIS PRO python 3 environment to an alternate location 

ex - 

Copy: C:\Program Files\ArcGIS\Pro\bin\Python\envs\arcgispro-py3

To: C:\tmp\python\venvs\py3_pro241_copy

2) In ArcGIS PRO 2.4.1 - Add the copied python environment as a new environment

Project -> Python -> Manage Environments -> Add -> Choose "C:\tmp\python\venvs\py3_pro241_copy" -> OK

3) Use pythons "wincertstore" module to download the trusted CA certificates on the windows machine*: 

In a python interpreter, run the following code to obtain a certificate bundle (pem_file)

import tempfile
import wincertstore

cert_bundle_file = r''
with tempfile.NamedTemporaryFile(delete=False) as tf:
   for storename in ("CA", "ROOT"):
       with wincertstore.CertSystemStore(storename) as store:
           for cert in store.itercerts(usage=wincertstore.SERVER_AUTH):
               # Py v2
               try:
                   tf.write(cert.get_pem().decode("ascii"))
               # Py v3
               except:
                   tf.write(bytes(cert.get_pem(),"ascii"))
   tf.flush()
   cert_bundle_file   = tf.name
   tf.close()

print (cert_bundle_file)

4) Use PIP to install needed packages (unable to add them through the GUI in PRO)

Open a cmd.exe

change directory to the copied environment "scripts" folder: cd C:\tmp\python\venvs\py3_pro241_copy\Scripts

Use PIP to install the needed module with the above "PEM_File": pip install <MODULE_NAME> --cert <LOCATION_TO_PEM_FILE>

* The reason step 3 is needed is due to a forward proxy implementation our agency uses that presents all internal clients with a different SSL/TLS certificate than the actual certificate at the site; pip.exe does not trust these internal corporate certificate authority (CA).  We have to tell pip what the trusted certificates are and are reading them from the trusted certificate store in windows.

Best of luck!

[pfoppe]

We recently upgrade to Esri ArcGIS PRO v2.4.2 and the python environment cloning through the GUI seems functional again.  No need to use steps #1 and #2.  

We are still having problems adding packages through the GUI, so steps #3 and #4 is a viable workaround for us.